[Dx4win] Access Violation using RTTY to KAM

David Tilley [email protected]
Mon, 11 Feb 2002 00:54:31 -0500




John, I don't know if this is the same problem or not, but I was getting
a similar error using my MFJ-1278B in RTTY from the RTTY window today.  I
had my RTTY window set up before to use TCP/IP and I was getting spots from
OH2AQ.   As a result, I had the options "Check for DX spots" and "Announce
DX to other window" enabled.  When I disabled those 2 options, the error
stopped, and I could do RTTY just fine.



- David, W4HPW





John F. Samuels wrote:


  No, Dave, rebooting did not help -- even with a clean boot, only DX4WIN
running, all unnecessary DX4WIN windows closed.  Restored the EX4WIN.EXE
module in case it was corrupted.  Perfectly repeatable problem which seems
to occur as soon as any printable text is decoded.  Violation address never
changes.  Tried less backup buffers, xon/xoff rather than RTS/CTS, disabled
other COM ports in preferences, etc., and cannot make the problem go away.

I ran the WPX contest controlling RTTY in my KAM from the packet window (not
without some buffer management problems, but no access violations.)  I had
the packetcluster running with TCP/IP in the RTTY window with no problems.
The KAM works fine on RTTY with TERMINAL.EXE on COM1.

I'm a programmer and quite familiar with Windows of all ilks and am stumped.
Looks like a code bug, but why now?  I operated the RTTY contest for hours
last month with no problems...

Speaking of 
bugs, there is one which affects the Packet Window.  If you
maximize it, issue a command, then restore it to window size, the input area
is messed up -- you can't get your TNC to respond.  To fix it you have to
maximize it again, position the cursor somewhere towards the bottom of the
input area, Enter, then restore the window.  Actually, when only one line is
displayed in the input area, and you maximize the window, you should still
only have one line in the input area, but you have many.  Not a high
priority, I guess.

John, K2CIB

----- Original Message -----
From: "Dave Henderson" 
<[email protected]>

To: "John F. Samuels" 
<[email protected]>

Sent: Sunday, February 10, 2002 6:03 PM
Subject: Re: [Dx4win] Access Violation using RTTY to KAM




  
    John

Did rebooting solve the problem?
dave
At 04:30 PM 2/9/02 -0500, you wrote:


    
      All of a sudden I am getting the following message when I enable my KAM


      
      
      on


      
        
          COM1:

An Exception Occurred:
Access violation at address 0057A148 in module 'DX4WIN.EXE'.  Read of
address FF FF FF FF.

If I enable the packet window (same port, same device) it works fine - no
errors.  I can force RTTY here and it works fine too.

I've done all the obvious things, rebooted, ensured no IRQ conflicts,


          
          
          etc.


          
            
              I am running version 5.03.

John, K2CIB

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